package cn.itcast.service;

import cn.itheima.shoppingcart.dto.ShoppingCartDTO;
import cn.itheima.shoppingcart.pojo.ShoppingCart;

import java.util.List;

public interface ShoppingCartService {

    /**
     * 添加购物车
     * @param shoppingCartDTO
     */
    void addShoppingCart(ShoppingCartDTO shoppingCartDTO);

    /**
     *   查看购物车
     * @return
     */
    List<ShoppingCart> showShoppingCart();

    /**
     *  清空购物车
     */
    void cleanShoppingCart();

    /**
     *  删除购物车中一个商品
     * @param shoppingCartDTO
     */
    void subShoppingCart(ShoppingCartDTO shoppingCartDTO);
}
